I've looked everywhere on the web, in my note and to fellow student without any of them able to explain to me. Here is my question to you.
I can't figure out how to calculate this boolean expression
Can you help me solve : ¬(¬x+x¬y) (sorry i don't know LAtex nor can post image.)
I know that the answer is ¬(x+y) or ¬x¬y
The idea is to note that $$1+\neg y=1,$$ so $$\neg x=\neg x(1+\neg y)=\neg x+\neg x\neg y.$$ Can you take it from there?
P.S.: The answer isn't what you think.